Plunger-valve.



W. E. GRAVES..

PLUNGER VALVE.

APPucATloN FILED APR. 26. |911.

Patented Aug. 13, 1918.A

wlTNEssEs ATTO H N EY `wlirinriiiuE. GRAVES, or BLOQMFIELD, NEBRASKA.

a'citizen'of theUnited States,"residing at Bloomfield, in the county of Knox and State of Nebraska, have invented certain new and useful "Improvements in Plunger-Valves,A

of whichv the following is a specification.'

l This invention relates toplunger valves,` anc'tmore particularly; toffthe class 'of plunger` [valves .commonly employed in A' liquid and air pumps. l

l Y wliichforms a part of the yThe primary ob ect of the invention is to providel a` reciprocating piston yarrangedrto reciprocate with theaction of the'plunger, so lthat the valve action will take place intermittently during the operationof the pump.

A further object ofthe invention is to provide a plunger valve of this character that may be minutely adjusted to regulate the' 'reeiprocatorytmovement of the piston plunger.

Another object of the invention' is to,l provide a reciprocatory piston lof 'this charac.

ter having, longitudinal open passageways adapted lto be intermittently opened Aand closed by the action of the lunger and the corresponding action offtlie piston-,during the operation of the device.

A further object of this. invention is the provision of' a plunger valve' which consistsylu of comparatively'few parts and is simple in" construction, but durable and well adapted to withstand the rough usage to which devices of this character are ordinarily subjected. i

For a full description of the invention and the advantages and merits thereof, reference is to be had to the following description and theaccompanying drawings, wherein is illustrated the preferred form of my invention, in which:

Figure l is a longitudinal section through l a pump casing showing mv invention applied thereto in operative position.

Fig. 2 1s an enlarged section on the line 2.-2 of Fig. 1.

y .F g. 3 is a section on the line 353 of Fig. 1. Y

Referring to the drawing, wherein is illustrated the preferred form of my invention, and in which like numerals of reference in dicate corresponding parts throughout the several views, the pump casing designated at l may be of any desired size according to the type and size of pump with which the 'nppiiaioneiea April 2e, 1917'.` serial No. 164,730.

' any .specification of refers' Ptntf 4Patented Aug. A13, 1918.v

- VHamGER-varare` d device is used. The plunger, designated generally at 2, is carried by the plunger rod 3, the latter being actuated by whatever j power transmitting*means1 is Vemployed for the particular type of pump with whichV the device is used.

rlvhe plungerrod 3 has its` connecting: end provided `with screw threads 4, and theseV receive kthe interior screw ythreads of an elongated sleeve 5,.the opposite endfof which carries valve disk 6. This valve diskhas the beveledV face 7. Y .1 i

Mounted for sliding movement on the sleeve 5 is a piston 8,' which consists 'of a relatively large tube 9 having its outer surface provided with screw7 threads 10. `One end of the tube `9 has an interior passage-V way 11 of a diameter considerably larger than the diametery of the sleeve 5. The marginal edge of this end of the tube lis rounded as at 12 to providea valve seat for the reception of the beveled surface 7 on the valve disk 6, The opposite end of the tube'9 has an :annular extension 13 of relatively small* diameter, sothat the end of 4the Ytube formsv a shoulder 14,'the`surface of which is provided with several openings 15 spaced equif These openings, Fig.2 ofthe drawing, c'extendl inwardly and downwardly'at an angle' so that .they enter the` passageway" distant around the tube.`l as shown clearly by 11 to establish communication between the ends of the tube. By referring to Fig. 2

of the drawing it will bernoted that the walls. of Vthe openings 15 mergeinto the wall of the passage way 11 and, at the opposite end, the openings merge into the exterior surface of the annular extension 13. To accomplish this. the openings 15 extend downwardlv vand thereby avoid the formation of shoulders or abrupt corners at the point of juncture of the openings with the passage way V11. t

The end of the sleeve 5, opposite to the end vupon which the disk 6 is mounted, is prov vided with a plurality the reception of an Vadjusting` nut 16 which of screwV threads forv may be moved to regulate the sliding move-V .ment of the piston.

The piston also includes the provision of a cuppacking 17 which isV constructed from a Ysuitable piece of rubber or leather of sub stantially cupuformation. This cup pack-A ing has a central opening through which the sleeve 10 is extended and the screwthreads the usual manner.

.the sleeve and the adjusting nut 16 will move into engagement' with the extension 13 thus forcing the piston downwardly while, at the saine time, the passageway 11 and the openings 15 will be open thus permitting the liquid to pass upwardly through 'the sleeve. By virtue of the merging of the walls of the openings 15 with the wall of the passageway 11, any retarding of the liquid, and consequently a free. passage of the liquid is obtained for Jfacilitating operation of the piston andy reducing to a minimum the resistance oiered by the liquid during the operation of the device.Y rllhe exterior surface of the annular extension 13 by virtue of its merging with the walls of the openings 15 acts to deflect the'liquid whenit passes through the opening to further assist in reducing the resistance oilered by the liquid when the device is operated. This operation will continue as long as the movementV is imparted to the piston rod and. the reciproeatory movement of the piston on the sleeve will cause van intermittent openingand closing of the openings 15 to the passageway 11, so that this quick changing valve action results-in:anefcientpurnp, while adapted for use for either air or liquid.

Fromvthe Jforegoing it will be observed that a very simple and durable plunger valve has been provided, the details of'whichembody, the preferred form. I desire it to be understood, however7 that slight changes in the minor details ofl construction maybe made without departing ronnthe spirit of the inventionor the scope ofthe claim hereunto appended.

I. claim:

A plunger ofthe character deseribedcomprising a sleeve having 4a valve disk mounted at one end, a plungerrod adjustably. connected to the sleeve, asliding tube mounted for longitudinal sliding movement on the said sleeve 'and providedwith an adjustable Y cup packing on its exterior, the interior of the said sleeve being provided at oneend. with `a relatively large passageway, the said.

Copies of this patent may;y be obtained for ve cents each'by addressing time Commissioner of Intentia Y Washington, D. C. 

